Home / 2,802.87-3,869.51-1,684.08

Finding the Fourth Proportional to 2,802.87, 3,869.51 and 1,684.08

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Solution

The fourth proportional to 2,802.87, 3,869.51 and 1,684.08 is: 2,324.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,802.87 : 3,869.51 = 1,684.08 : x
  2. Step 2: Convert to fraction form
    2,802.87/3,869.51 = 1,684.08/x
  3. Step 3: Cross multiply
    2,802.87x = 3,869.51 × 1,684.08
  4. Step 4: Simplify right side
    2,802.87x = 6,516,568.61
  5. Step 5: Solve for x
    x = 6,516,568.61/2,802.87
  6. Step 6: Final answer
    x = 2,324.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.